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SN65HVD72低功耗模式如何配置

在手册上看到,有将Driver和Receiver Disabled 以后,功耗Icc可以降到0.1uA ,具体配置如下:

(1)DE=GND

(2)RE=Vcc

(3)D=OPEN

(4)NO load

其中,第一条和第二条容易理解,直接给高/低电平就可以,第三条是什么意思呢,开路?引脚OPEN怎么实现呢?实际应用中,A、B之间接了120Ω的负载,现在NO load是要把这个负载移除还是什么意思呢?